论文标题
拖动表面。在Ergoregion的积聚托里
Dragged surfaces. On the accretion tori in the ergoregion
论文作者
论文摘要
我们讨论存在轨道上或靠近Kerr Black Hole（“ Dragged”配置）的外部外侧面的扩展物质配置的条件。所考虑的旋转托里是与状态的正压方程式的完美流体构型，在中央Kerr黑洞的赤道平面上绕。还讨论了带有环形磁场的磁化托里的可能性。在吸引人的指示下可以观察到拖动的摩托车，并分析流体特征和几何特征，与摩托车稳定性及其观测有关。还讨论了从拖动Tori的内部边缘的QPO排放。我们认为，较小的拖动Tori可能会遭受特征性的不稳定性，框架拖拉的效果。这种可能性得到了彻底探索。这最终可能导致圆环（磁盘去角质）的破坏，这可以与非常接近黑洞地平线的区域中的积聚和过程结合在一起。根据中央吸引子无量纲自旋的特征。可以观察到这些结构的旋转黑洞，无量纲旋转a> 0.9897m。
We discuss the conditions for the existence of extended matter configurations orbiting in the ergoregion or close to the outer ergosurface of the Kerr black hole ("dragged" configurations). The corotating tori under consideration are perfect fluid configurations with barotropic equation of state, orbiting on the equatorial plane of the central Kerr black hole. The possibility of magnetized tori with a toroidal magnetic field is also discussed. Indications on the attractors where dragged tori can be observed are provided with the analysis of the fluid characteristics and geometrical features, relevant for the tori stability and their observations. QPOs emissions from the inner edges of the dragged tori are also discussed. We argue that the smaller dragged tori could be subjected to a characteristic instability, effect of the frame-dragging. This possibility is thoroughly explored. This can finally lead to the destruction of the torus (disk exfoliation) which can combine with accretion and processes present in the regions very close to the black hole horizon. Tori are characterized according to the central attractor dimensionless spin. These structures can be observed orbiting black holes with dimensionless spin a > 0.9897M.
